CN204706961U - A kind of wireless electric energy transmission device and element of rail toy car - Google Patents
A kind of wireless electric energy transmission device and element of rail toy car Download PDFInfo
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- CN204706961U CN204706961U CN201520476047.5U CN201520476047U CN204706961U CN 204706961 U CN204706961 U CN 204706961U CN 201520476047 U CN201520476047 U CN 201520476047U CN 204706961 U CN204706961 U CN 204706961U
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Abstract
The utility model relates to a kind of wireless electric energy transmission device and element of rail toy car, comprise radio energy radiating circuit and radio energy receiving circuit, wherein radio energy radiating circuit comprises the power supply, reduction voltage circuit, the first current rectifying and wave filtering circuit, the first voltage stabilizing circuit, inverter circuit, the first compensating circuit and the power transmission coil that connect successively; Radio energy receiving circuit, it comprises the receiving coil, the second compensating circuit, the second current rectifying and wave filtering circuit, the second voltage stabilizing circuit and the power conditioning circuitry that connect successively.Described power transmission coil and receiving coil adopt the mode of electromagnetic induction, make described receiving coil respond to the change in described transmitting coil magnetic field to produce induced current.The utility model achieves non-contacting delivery of electrical energy, and makes to keep stable in delivery of electrical energy process, and transmission efficiency is high, realizes the voltage of load end and the adjustable of power.The utility model additionally provide a kind of can the element of rail toy car of wireless charging.
Description
Technical field
The utility model relates to wireless charging field, relates in particular and carries out wireless power to racer toy vehicles.
Background technology
Wireless power transmission technology starts from the research of the descendants physicist tesla of American Croatia of 1889.He once imagined using the earth as inner wire, and earth ionosphere, as outer conductor, utilizes the electromagnetic wave on earth surface to carry out electric energy transmitting, in the experimental system that he sets up, have employed a huge coil, attempt electric energy to be sent to all parts of the world, for some isolated houses provide illumination.But costly owing to testing, do not solve the key issues such as the directed transmission of electric energy, so there is no reach the practical stage.
For many years scientist both domestic and external wireless power transmission technical elements persistent carried out a lot of exploratory development work, but to make slow progress.In recent years, induction wireless power transmission technology develops rapidly as a kind of emerging wireless power transmission technology, and cause huge repercussion in wireless power transmission field, make wireless power transmission technology become the another hot issue of Chinese scholars research.
The wireless transmission that removal wire carries out electric energy is people's pursuits for many years, and current wireless power transmission mode is divided into three kinds haply: (one) induction wireless power transmission mode; (2) magnetic resonance manifold type wireless power transmission mode; (3) radio waves wireless power transmission mode.
Induction wireless power transmission mode is applicable to short-range energy transfer, put goods on the market at present use have electric toothbrush, electric shaver and various charger for mobile phone etc.Magnetic resonance manifold type wireless power transmission mode is applicable to the energy transfer of moderate distance, mainly applies to charge to main equipments such as electric automobiles.Radio waves wireless power transmission mode mainly applies to the electric power transfer of long distance, remotely-controlled equipment such as such as telecontrolled aircraft etc.
Directly adopt 220V, 50Hz alternating current to use as induced current in existing technology, this power frequency is low, and radio transmission performance is unstable, efficiency is poor, therefore needs just to improve these defects.
Utility model content
The utility model has designed and developed a kind of wireless electric energy transmission device, wirelessly carries out the transmission of electric energy, and the adjustability of the correction achieved waveform and connection load outputs power and voltage.
The technical scheme that the utility model provides is:
A kind of wireless electric energy transmission device, comprising:
AC power;
First current rectifying and wave filtering circuit, it is electrically connected described AC power, is converted to directly by alternating current
Stream electricity;
Inverter circuit, it inputs described direct current, exports pulse ac electricity; Described inverter circuit can the frequency of regulation output pulse ac electricity;
First compensating circuit, it receives the pulse ac that described inverter circuit exports, and can carry out power back-off and sinusoidal waveform correction by paired pulses alternating current;
Power transmission coil, the pulse ac electricity described in reception; And
Receiving coil, responds to the electromagnetic change that described power transmission coil produces, and produces alternating current;
Second compensating circuit, it receives the alternating current that described receiving coil produces, and can carry out power back-off and sinusoidal waveform correction to it.
Preferably, between described AC power and the first current rectifying and wave filtering circuit, reduction voltage circuit module is also set, for reducing the voltage of alternating current.
Preferably, between described first current rectifying and wave filtering circuit and the first compensating circuit, the first voltage stabilizing circuit is also set, for eliminating DC pulse.
Preferably, after described second compensating circuit, also set gradually:
Second current rectifying and wave filtering circuit, it receives the alternating current that described second compensating circuit exports, and converts thereof into direct current;
Second voltage stabilizing circuit module, it receives the direct current that described second current rectifying and wave filtering circuit exports, and eliminates DC pulse;
Power conditioning circuitry, it receives the direct current that described second voltage stabilizing circuit module exports, the galvanic voltage of regulation output and power;
Wherein, the regulative mode of described power conditioning circuitry is, the regulating power when voltage is constant; When power is constant, regulation voltage changes, and simultaneously regulating power and voltage.
Preferably, described first current rectifying and wave filtering circuit comprises rectification module and filtration module; Rectification module is arranged to the bridged-style of four rectifier diodes; Filtration module comprises two electric capacity in parallel.
Preferably described inverter circuit also comprises the first variable resistor, the second adjustable resistance and variable timing electric capacity, and the discharge end pin of chip is connected between the first variable resistor and the second adjustable resistance; Voltage on variable timing electric capacity is the external trigger voltage of high-triggering end pin and low triggering end pin.
Preferably, described first compensating circuit comprises two RC circuit.
Preferably, described power conditioning circuitry comprises series connection the 3rd variable resistor of dividing potential drop and the 4th variable resistor of parallel shunt.
Preferably, described wireless electric energy transmission device is by power delivery to load, and described load is battery or small-power mobile electronic device.
A kind of element of rail toy car with wireless power function, comprise above-mentioned wireless electric energy transmission device, wherein, track is provided with power transmission coil, receiving coil is provided with bottom toy car, when toy car travels in orbit, electrical energy transfer is given described receiving coil by described power transmission coil, powers to be embodied as toy car.
The beneficial effects of the utility model are: the utility model provides a kind of wireless electric energy transmission device, achieves non-contacting delivery of electrical energy, and make to keep stable in delivery of electrical energy process, and transmission efficiency is high, realize the voltage of load end and the adjustable of power.
Accompanying drawing explanation
Fig. 1 is the system construction figure of radio energy transmission system.
Fig. 2 is the way circuit figure of radio energy radiating circuit.
Fig. 3 is step-down, rectification, filtering, voltage stabilizing four partial circuit figure.
Fig. 4 is voltage waveform view after step-down.
Fig. 5 is the oscillogram of voltage after fullwave rectification.
Fig. 6 is the DC voltage ripple oscillogram exported after filtering.
Fig. 7 is the output voltage wave figure after voltage stabilizing.
Fig. 8 is the circuit diagram of inverter circuit.
Fig. 9 is the voltage oscillogram removing spike.
Figure 10 is the voltage oscillogram exported after compensating.
Figure 11 is the circuit diagram of radio energy receiving circuit.
Figure 12 is final output voltage wave.
Figure 13 is toy car schematic diagram described in the utility model.
Figure 14 is toy car partial enlarged drawing described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
As shown in Figure 1, Figure 2, shown in, the utility model provides a kind of wireless electric energy transmission device, comprise radio energy radiating circuit 100 and radio energy receiving circuit 200, wherein, radio energy radiating circuit 100 comprises the power supply 110, reduction voltage circuit 120, first current rectifying and wave filtering circuit 130, first voltage stabilizing circuit 140, inverter circuit 150, first compensating circuit 160 and the power transmission coil 170 that connect successively.
Radio energy receiving circuit 200 comprises receiving coil 210, second compensating circuit 220, second current rectifying and wave filtering circuit 230, second voltage stabilizing circuit 240 and power conditioning circuitry 250 and load 260 that connect successively.Wherein power transmission coil 170 and receiving coil 210 adopt the mode of electromagnetic induction, make described receiving coil 210 respond to the change of described power transmission 170 coil magnetic field, thus make receiving coil 210 produce induced current, and then achieve wireless delivery of electrical energy.
As shown in Figure 3, in another embodiment, power supply 110 adopts conventional 220V alternating current, first power supply 110 needs the alternating current through reduction voltage circuit 120, voltage being reduced to rated voltage, reduction voltage circuit 120 comprises primary coil 121 and secondary coil 122 and iron core, the two ends of power supply 110 connect primary coil 121, when being connected with alternating current in primary coil 121, just exchange flux is produced in iron core, make to induce voltage in secondary coil 122, as disregarded core loss, secondary coil 122 both end voltage and the ratio of the voltage at primary coil 121 two ends equal the number of turn of secondary coil 122 and the ratio of primary coil 121 number of turn.By the effect of reduction voltage circuit 120, by the alternating current of 220V AC conversion in order to rated voltage, the voltage after reduction voltage circuit 120 is changed as described in Figure 4.
In another embodiment, described first current rectifying and wave filtering circuit 130 comprises rectification circuit 131 and filter circuit 132.Wherein the electric bridge form that four rectifier diode D1 are connected into is arranged to by rectification circuit 131, the alternating current that the voltage that reduction voltage circuit 120 can export by rectification circuit 131 is lower converts unidirectional pulsating nature direct current to, and described unidirectional pulsating nature DC voltage situation as shown in Figure 5.The 220V voltage exported from power supply 110 can directly utilize dividing potential drop to obtain required voltage after rectification circuit 131, but rectifier output voltage is too large, and dividing potential drop power loss is too large.
Filter circuit 132 is made up of two electric capacity C1/C2 in parallel, filter circuit 132 refer to only allow signal component within the scope of certain frequency normal through, and stop another part frequency content to be passed through.Voltage, after the first current rectifying and wave filtering circuit 130 and filter circuit 132 filtering, makes waveform tend towards stability, but still is the direct current of a pulsation, as shown in Figure 6.
In another embodiment, the direct current of pulsation can obtain galvanic current after the process of the first voltage stabilizing circuit 140, eliminates filtered DC pulse, as shown in Figure 7.Wherein the first voltage stabilizing circuit 140 comprises voltage stabilizing chip LM7812CT, and voltage stabilizing chip LM7812CT is three sections of integrated regulator IC chip component, be applicable to various power supply stabilization circuit, output stability be good, easy to use, output overcurrent, overheated automatic protection.When not using voltage stabilizing chip, the direct current of pulsation can make the power supply instability of inverter circuit 150.
As shown in Figure 8, in another embodiment, inverter circuit 150 comprises LM555CN chip, and the first resistance R1 connected successively, the second resistance R2, timing capacitor C4.LM555CN chip is the time-base circuit of National Semiconductor.China and each large integrated circuit manufacturer in the world all have like product for selecting, to be use a kind of universal integrated circuit very widely.LM555CN chip functions is powerful, use is flexible, the scope of application is wide, can be used to generation time and postpones and multiple pulse signal, be widely used in various electronic product.LM555CN chip has 8 pins, wherein, discharge end 7 pin of described LM555CN chip is connected between the first resistance R1 and the second resistance R2, voltage on timing capacitor C4 is the external trigger voltage of high-triggering end 6 pin and low triggering end 2 pin, voltage controling end 5 pin access High-frequency Interference shunt capacitance C5, directreset terminal 4 pin connects high level.Galvanic current can press inversion to be pulse voltage by inverter circuit 150, and in a pulse voltage signal, high level institute duration T 1 and low level institute duration T 2 meet following relation:
T
1＝0.693R
1C
4
T
2＝0.693R
2C
4
Pulse frequency f is
f＝1.433/(R
1+R
2)·C
4。
In another embodiment, described first resistance R1, the second resistance R2 adopt variable resistor, and to regulate high level and low level duty ratio, described timing capacitor C4 adopts variable capacitance, realizes frequency-adjustable.Because required output is the alternating current of standard sine wave, so duty ratio is 50%, and the height of output frequency is proportional with the size of C4.
Output 3 pin of LM555CN chip connects the base stage of triode Q1 and Q2, and the conducting in turn of two triode Q1 with Q2 makes output voltage waveforms exchanging across the upper and lower both sides of transverse axis, instead of the direct current of pulsation above transverse axis.Electric capacity C6 connects with inductance L 1, with filtering spike clutter, as shown in Figure 9.
In another embodiment, connect the first compensating circuit 160 after inverter circuit 150, described first compensating circuit 160 comprises two RC circuit, with the correction of the compensation and waveform of carrying out power, makes output waveform be standard sine wave, as shown in Figure 10.
As shown in figure 11, in another embodiment, radio energy receiving circuit 200, by receiving coil 210, utilizes electromagnetic induction principle, receives the alternating current that inversion exports.Receiving coil 210 connects the second compensating circuit 220, second current rectifying and wave filtering circuit 230 successively, described second compensating circuit 220 is identical with the connected mode of the first compensating circuit 160, second current rectifying and wave filtering circuit 230 is identical with the connected mode of the first current rectifying and wave filtering circuit 130, the alternating current that receiving coil 210 receives is through the second compensating circuit 220, second current rectifying and wave filtering circuit 230, stable output direct current, as shown in figure 12.
In another embodiment, described power conditioning circuitry 250 comprises the 3rd resistance R6 and the 4th resistance R7 of series connection, described 4th resistance R7 two ends connect load 260, and described 3rd resistance R6 and the 4th resistance R7 adopts variable resistor, with the adjustability of the voltage and power that realize load.
Finally export owing to directly using voltage stabilizing chip LM7805CT and cannot reach designed parameter value completely, so adopt voltage stabilizing chip LM7809CT, be used for the size of regulation output voltage and the height of power again by adjustable resistance R6 and R7 simultaneously, Variable power does not change, power fixed voltage changes to comprise voltage, and power and voltage are simultaneously adjustable.
In another embodiment, described load 260 can be set to battery, with by electrical power storage in the battery, realizes the function of wireless charging.
The wireless electric energy transmission device that the utility model provides can be applied on element of rail toy car, power transmission coil 170 is routed in track, receiving coil 210 is arranged on bottom toy car, toy car travels in orbit, when above toy car drives to power transmission coil 170, electrical energy transfer to receiving coil 210, achieves as toy car is powered by power transmission coil 170.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a wireless electric energy transmission device, is characterized in that, comprising:
AC power;
First current rectifying and wave filtering circuit, it is electrically connected described AC power, converts alternating current to direct current;
Inverter circuit, it inputs described direct current, exports pulse ac electricity; Described inverter circuit can the frequency of regulation output pulse ac electricity;
First compensating circuit, it receives the pulse ac that described inverter circuit exports, and can carry out power back-off and sinusoidal waveform correction by paired pulses alternating current;
Power transmission coil, the pulse ac electricity described in reception; And
Receiving coil, responds to the electromagnetic change that described power transmission coil produces, and produces alternating current;
Second compensating circuit, it receives the alternating current that described receiving coil produces, and can carry out power back-off and sinusoidal waveform correction to it.
2. wireless electric energy transmission device according to claim 1, is characterized in that, also arranges reduction voltage circuit module between described AC power and the first current rectifying and wave filtering circuit, for reducing the voltage of alternating current.
3. wireless electric energy transmission device according to claim 1 and 2, is characterized in that, also arranges the first voltage stabilizing circuit, for eliminating DC pulse between described first current rectifying and wave filtering circuit and the first compensating circuit.
4. wireless electric energy transmission device according to claim 3, is characterized in that, after described second compensating circuit, also sets gradually:
Second current rectifying and wave filtering circuit, it receives the alternating current that described second compensating circuit exports, and converts thereof into direct current;
Second voltage stabilizing circuit module, it receives the direct current that described second current rectifying and wave filtering circuit exports, and eliminates DC pulse;
Power conditioning circuitry, it receives the direct current that described second voltage stabilizing circuit module exports, the galvanic voltage of regulation output and power;
Wherein, the regulative mode of described power conditioning circuitry is, the regulating power when voltage is constant; When power is constant, regulation voltage changes, and simultaneously regulating power and voltage.
5. wireless electric energy transmission device according to claim 1 and 2, is characterized in that, described first current rectifying and wave filtering circuit comprises rectification module and filtration module; Rectification module is arranged to the bridged-style of four rectifier diodes; Filtration module comprises two electric capacity in parallel.
6. wireless electric energy transmission device according to claim 1, it is characterized in that, described inverter circuit also comprises the first variable resistor, the second adjustable resistance and variable timing electric capacity, and the discharge end pin of chip is connected between the first variable resistor and the second adjustable resistance; Voltage on variable timing electric capacity is the external trigger voltage of high-triggering end pin and low triggering end pin.
7. wireless electric energy transmission device according to claim 1 and 2, is characterized in that, described first compensating circuit comprises two RC circuit.
8. wireless electric energy transmission device according to claim 1 and 2, is characterized in that, described power conditioning circuitry comprises series connection the 3rd variable resistor of dividing potential drop and the 4th variable resistor of parallel shunt.
9. according to the wireless electric energy transmission device in claim 1,2,4 or 6 described in any one, it is characterized in that, described wireless electric energy transmission device is by power delivery to load, and described load is battery or small-power mobile electronic device.
10. one kind has the element of rail toy car of wireless power function, it is characterized in that, comprise the wireless electric energy transmission device in claim 1-9 described in any one, wherein, track is provided with power transmission coil, be provided with receiving coil bottom toy car, when toy car travels in orbit, electrical energy transfer is given described receiving coil by described power transmission coil, powers to be embodied as toy car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476047.5U CN204706961U (en) | 2015-07-03 | 2015-07-03 | A kind of wireless electric energy transmission device and element of rail toy car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476047.5U CN204706961U (en) | 2015-07-03 | 2015-07-03 | A kind of wireless electric energy transmission device and element of rail toy car |
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|---|---|
| CN204706961U true CN204706961U (en) | 2015-10-14 |
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|---|---|---|---|
| CN201520476047.5U Expired - Fee Related CN204706961U (en) | 2015-07-03 | 2015-07-03 | A kind of wireless electric energy transmission device and element of rail toy car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953724A (en) * | 2015-07-03 | 2015-09-30 | 天津理工大学 | Wireless power transmission device and toy rail car |
| CN105322629A (en) * | 2015-11-30 | 2016-02-10 | 国网北京市电力公司 | Wirelessly charging automobile and system |
| CN107332320A (en) * | 2017-09-01 | 2017-11-07 | 清华大学 | Percutaneous wireless charging system and method with charging current automatic adjusument function |
-
2015
- 2015-07-03 CN CN201520476047.5U patent/CN204706961U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953724A (en) * | 2015-07-03 | 2015-09-30 | 天津理工大学 | Wireless power transmission device and toy rail car |
| CN105322629A (en) * | 2015-11-30 | 2016-02-10 | 国网北京市电力公司 | Wirelessly charging automobile and system |
| CN107332320A (en) * | 2017-09-01 | 2017-11-07 | 清华大学 | Percutaneous wireless charging system and method with charging current automatic adjusument function |
| CN107332320B (en) * | 2017-09-01 | 2020-06-23 | 清华大学 | Percutaneous wireless charging system and method with charging current self-adaptive adjusting function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20160703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |